The electric butterfly valve is divided into closed type and adjustable type. It has the characteristics of simple structure, large circulation capacity, wide application range, high cost performance, etc. it is equipped with sharp Chr, CHQ, 381r, PSQ and other electric actuators, which can control the switching value, and can also receive 4-20mA or 1-5V control signals from PLC, DCS and other upper computers to realize continuous adjustment. Electric butterfly valve is widely used in water supply and drainage, mine metallurgy, environmental protection, papermaking, chemical industry and other industries.

According to the structure, electric butterfly valve can be divided into electric central sealing butterfly valve, electric double eccentric butterfly valve, electric three eccentric butterfly valve, electric rubber lined butterfly valve, electric fluorine lined butterfly valve, etc. according to the function, it can also be divided into electric soft sealing butterfly valve, electric metal sealing butterfly valve, electric ventilation butterfly valve, electric vacuum butterfly valve, electric expansion butterfly valve, electric sanitary butterfly valve, etc. according to the connection mode, it can be divided into electric Wafer butterfly valve, electric flange butterfly valve, electric welding butterfly valve, etc.

In selection, according to the different medium temperature, the electric soft sealing butterfly valve can be selected at normal temperature, and the electric metal sealing butterfly valve must be selected at higher temperature (higher than 150 ℃). The central sealing butterfly valve is suitable for two position on-off control, while the three eccentric butterfly valve is suitable for continuous regulation because of its nearly equal percentage flow characteristics. For corrosive media, electric fluorine lining or electric rubber lining butterfly valve can be used. In need of vacuumizing occasions, there are electric vacuum butterfly valve can be selected. In large-diameter ventilation pipe or flue gas pipe, electric ventilation butterfly valve and electric flue gas butterfly valve are more applicable.

With the continuous improvement of processing technology and material science, electric butterfly valve will be widely used in modern industry.